If this is limited to iDEAL it could work out.
For other payment methods you will quickly run into compliance issues and contract issues with the payment method provider (e.g. Sofort, Giropay, Credit Card companies).
There are a lot of regulations around accepting payments for businesses such as specific charges per industry or payment type.
Great idea , however for serious business use you may want to use a specialized payment service provider such as pay.nl , Mollie, Stripe or Adyen (or other local providers)